After the fall of civilization, a hierarchical society was born where blood determines everything. The rich steal both the blood and lifespans of the poor, rejoicing in their eternal lives.
Nagi is a commoner doomed to an early death, while Saya is a royal gifted with eternal youth. When their unlikely paths cross in a twist of fate, their innocent love sets the gears in motion to tear down the walls of a society built upon tremendous inequality and discrimination.
Nagi is a commoner doomed to an early death, while Saya is a royal gifted with eternal youth. When their unlikely paths cross in a twist of fate, their innocent love sets the gears in motion to tear down the walls of a society built upon tremendous inequality and discrimination.

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Together at last, Nagi and Saya reconvene with Cobalt at the newly-seized Ronadyphe Prison, only to receive unexpected company as Lernaean tips his hand and offers to join forces. Thus forms a revolutionary army of commoners, Crestfolk, and nobles, ready to march on the royal capital and depose the False Sovereign-but is it enough to liberate Agartha? Can Saya reconcile the people's desire for a True Sovereign with her desire to live freely with her hard-won friends? Can Nagi live up to the demands of being the True Sovereign's closest confidant?
Blood will tell.